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Zircon xenocrysts in late cretaceous magmatic rocks in the kermanshah ophiolite: link to Iran continental crust supports the subduction initiation model
Moghadam, H. S.1,2,3; Li, Q. L.3; Stern, R. J.4; Griffin, W. L.2; O'Reilly, S. Y.2
2022-02-25
Source PublicationINTERNATIONAL GEOLOGY REVIEW
ISSN0020-6814
Pages12
AbstractGeochronological and geochemical data show that Late Cretaceous Zagros ophiolites were generated by forearc seafloor spreading during a subduction initiation event along the southwestern margin of Iran. These ophiolites define a similar to 3000 km long belt passing from Cyprus to Turkey, Syria, Iran, the UAE, and Oman. Ten samples of plagiogranites, amphibole gabbros and diorites of the Kermanshah ophiolite yield U-Pb zircon magmatic ages indicating ophiolite formation at 98 to 96 Ma. Some Kermanshah rocks also contain abundant zircon xenocrysts with age peaks (in order of decreasing size): Triassic (similar to 247 Ma), mid-Paleoproterozoic (similar to 2150 Ma), Late Paleoproterozoic (similar to 1850 Ma), Late Ediacaran (similar to 560 Ma), Early Cretaceous (similar to 140 Ma), and Tonian (similar to 850 Ma). Similar age peaks are seen in magmatic and detrital rocks of Iranian crust to the north. The xenocrysts have epsilon Hf(t) values from +6.3 to - 21.6, corresponding to depleted mantle Hf model ages (T-DM) of 0.6 to 3.6 Ga. The xenocryst age peaks are similar to those of zircons in Iranian continental crust. The occurrence of zircon xenocrysts in the Kermanshah ophiolite suggests that this formed adjacent to the Iranian continent, as expected for Late Cretaceous subduction initiation.
KeywordZircon U-pb geochronology plagiogranite zagros ophiolites Iran
DOI10.1080/00206814.2022.2043193
Funding OrganizationNational Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China
WOS KeywordU-PB GEOCHRONOLOGY ; TECTONIC EVOLUTION ; NEO-TETHYS ; OCEANIC PLAGIOGRANITES ; SEMAIL-OPHIOLITE ; IGNEOUS ROCKS ; MANTLE WEDGE ; ARC CRUST ; CONSTRAINTS ; CHROMITITES
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFE0203000]
Funding OrganizationNational Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China
WOS Research AreaGeology
WOS SubjectGeology
WOS IDWOS:000760151500001
PublisherTAYLOR & FRANCIS INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/104939
Collection岩石圈演化国家重点实验室
Corresponding AuthorMoghadam, H. S.
Affiliation1.Damghan Univ, Sch Earth Sci, Damghan, Iran
2.Macquarie Univ, Ccfs & Gemoc Arc Natl Key Ctr, Sydney, NSW, Australia
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
4.Univ Texas Dallas, Geosci Dept, Richardson, TX 75083 USA
First Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Moghadam, H. S.,Li, Q. L.,Stern, R. J.,et al. Zircon xenocrysts in late cretaceous magmatic rocks in the kermanshah ophiolite: link to Iran continental crust supports the subduction initiation model[J]. INTERNATIONAL GEOLOGY REVIEW,2022:12.
APA Moghadam, H. S.,Li, Q. L.,Stern, R. J.,Griffin, W. L.,&O'Reilly, S. Y..(2022).Zircon xenocrysts in late cretaceous magmatic rocks in the kermanshah ophiolite: link to Iran continental crust supports the subduction initiation model.INTERNATIONAL GEOLOGY REVIEW,12.
MLA Moghadam, H. S.,et al."Zircon xenocrysts in late cretaceous magmatic rocks in the kermanshah ophiolite: link to Iran continental crust supports the subduction initiation model".INTERNATIONAL GEOLOGY REVIEW (2022):12.
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